1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>idr_get_next</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="The Linux Kernel API"><link rel="up" href="idr.html" title="idr/ida Functions"><link rel="prev" href="API-idr-for-each.html" title="idr_for_each"><link rel="next" href="API-idr-replace.html" title="idr_replace"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">idr_get_next</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-idr-for-each.html">Prev</a>&#160;</td><th width="60%" align="center">idr/ida Functions</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-idr-replace.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-idr-get-next"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>idr_get_next &#8212; 
2     lookup next object of id to given id.
3 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void * <b class="fsfunc">idr_get_next </b>(</code></td><td>struct idr * <var class="pdparam">idp</var>, </td></tr><tr><td>&#160;</td><td>int * <var class="pdparam">nextidp</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1123637948"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>idp</code></em></span></dt><dd><p>
4     idr handle
5    </p></dd><dt><span class="term"><em class="parameter"><code>nextidp</code></em></span></dt><dd><p>
6     pointer to lookup key
7    </p></dd></dl></div></div><div class="refsect1"><a name="idp1123640564"></a><h2>Description</h2><p>
8   Returns pointer to registered object with id, which is next number to
9   given id. After being looked up, *<em class="parameter"><code>nextidp</code></em> will be updated for the next
10   iteration.
11   </p><p>
12
13   This function can be called under <code class="function">rcu_read_lock</code>, given that the leaf
14   pointers lifetimes are correctly managed.
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